AI analysis
CVE-2026-76498 covers improper access control flaws (CWE-284) in Cisco Application Policy Infrastructure Controller (APIC), found by Cisco during an internal security review and fixed in software hardening releases. The CVSS 3.1 score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) indicates a remotely reachable issue that needs no privileges and no user interaction and can fully compromise confidentiality, integrity, and availability. The published description does not give a precise trigger or the affected version ranges. Operators of Cisco APIC in ACI fabrics are the affected population. It is not listed in CISA KEV, and no public proof-of-concept is known, so exploitation is none known.
What to do: Apply the Cisco APIC software hardening releases that address CVE-2026-76498 as soon as they are available for your deployment, and confirm the installed build against Cisco’s PSIRT advisory. Until patched, keep the APIC management plane off the internet, restrict access to trusted admin networks, and review authentication and access-control logs for unexpected unauthenticated activity. No public exploit is known, but the critical unauthenticated rating means exposed controllers should be treated as urgent.
Affected
| Cisco Application Policy Infrastructure Controller (APIC) | — |
Estimated exposure
—No basis for an estimate.
Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.
Description
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Application Policy Infrastructure Controller (APIC) engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-76498 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-284.